From owner-freebsd-current@FreeBSD.ORG Mon Aug 23 08:01:37 2010 Return-Path: Delivered-To: freebsd-current@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 21BD71065698; Mon, 23 Aug 2010 08:01:37 +0000 (UTC) (envelope-from avg@icyb.net.ua) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 369318FC19; Mon, 23 Aug 2010 08:01:35 +0000 (UTC) Received: from porto.topspin.kiev.ua (porto-e.starpoint.kiev.ua [212.40.38.100]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id LAA12812; Mon, 23 Aug 2010 11:01:34 +0300 (EEST) (envelope-from avg@icyb.net.ua) Received: from localhost.topspin.kiev.ua ([127.0.0.1]) by porto.topspin.kiev.ua with esmtp (Exim 4.34 (FreeBSD)) id 1OnRyI-000Dw7-8G; Mon, 23 Aug 2010 11:01:34 +0300 Message-ID: <4C722ADD.1030103@icyb.net.ua> Date: Mon, 23 Aug 2010 11:01:33 +0300 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.2.8) Gecko/20100822 Lightning/1.0b2 Thunderbird/3.1.2 MIME-Version: 1.0 To: Doug Barton References: <4C71E858.90009@FreeBSD.org> <4C721334.1050000@icyb.net.ua> <4C7219B2.4070303@FreeBSD.org> <4C722209.1020405@icyb.net.ua> <4C72297D.90104@FreeBSD.org> In-Reply-To: <4C72297D.90104@FreeBSD.org> X-Enigmail-Version: 1.1.2 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: freebsd-current@FreeBSD.org Subject: Re: runaway intr problems: powerd and/or hw.acpi.cpu.cx_lowest related X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Aug 2010 08:01:37 -0000 on 23/08/2010 10:55 Doug Barton said the following: > Meanwhile, with the combination of ULE, no powerd, and cx_lowest=C1 I was able > to watch 2 movies streaming over flash, plus do backups to various USB drives, > read mail, etc. etc. for several hours; all without a hiccup. So clearly (in my > mind at least) there is a problem with powerd, at least in the situation like > mine where there is IRQ contention for HPET. I forgot to mention that in my > previous testing today I tried running just powerd (not changing cx_lowest) and > I when intr started running away I could "solve" the problem by killing powerd. > The intr process went back to normal, and I could go back to doing what I was > doing without having to reboot again. Speaking of which you seem to have too many powerd levels. What cpufreq drivers are in use on your system? Maybe you'd want to stick to just one of them? E.g.: http://lists.freebsd.org/pipermail/freebsd-stable/2010-March/055666.html -- Andriy Gapon